Lubricating oil is a liquid or semi-solid lubricant used on various types of automobiles and mechanical equipment to reduce friction and protect machinery and machined parts. It is mainly used for lubrication, auxiliary cooling, rust prevention, cleaning, sealing and buffering (Roab)
Linseed oil is the oil extracted from flaxseed, also known as flaxseed, the seed of annual or perennial herb flax. Flax is one of the oldest fiber crops in the world. There are many varieties, but it can be roughly divided into three categories: oil flax, fiber flax and oil fiber flax. Its seeds can be used to extract oil.
